class_docstr: Optional SAX2 handler for lexical events.
  
  This handler is used to obtain lexical information about an XML
  document, that is, information about how the document was encoded
  (as opposed to what it contains, which is reported to the
  ContentHandler), such as comments and CDATA marked section
  boundaries.
  
  To set the LexicalHandler of an XMLReader, use the setProperty
  method with the property identifier
  'http://xml.org/sax/properties/lexical-handler'.
docstr: Report the start of the DTD declarations, if the document
  has an associated DTD.
  
  A startEntity event will be reported before declaration events
  from the external DTD subset are reported, and this can be
  used to infer from which subset DTD declarations derive.
  
  name is the name of the document element type, public_id the
  public identifier of the DTD (or None if none were supplied)
  and system_id the system identfier of the external subset (or
  None if none were supplied).
docstr_tok: ["Report","the","start","of","the","DTD","declarations",",","if","the","document","has","an","associated","DTD",".","A","startEntity","event","will","be","reported","before","declaration","events","from","the","external","DTD","subset","are","reported",",","and","this","can","be","used","to","infer","from","which","subset","DTD","declarations","derive",".","name","is","the","name","of","the","document","element","type",",","public_id","the","public","identifier","of","the","DTD","(","or","None","if","none","were","supplied",")","and","system_id","the","system","identfier","of","the","external","subset","(","or","None","if","none","were","supplied",")","."]
code: def startDTD(self, name, public_id, system_id):
      """Report the start of the DTD declarations, if the document
      has an associated DTD.
  
      A startEntity event will be reported before declaration events
      from the external DTD subset are reported, and this can be
      used to infer from which subset DTD declarations derive.
  
      name is the name of the document element type, public_id the
      public identifier of the DTD (or None if none were supplied)
      and system_id the system identfier of the external subset (or
      None if none were supplied)."""
  
label_desc: Use image node_id 2 for calling the LexicalHandler obj's underlying member method code with example usage: obj.startDTD(name, public_id, system_id) without return types